Students will test various materials to determine if any can shield their "magnetometer" (compass) from an external magnetic field using their own experimental design. If no suitable material is available, they will devise another method to protect...(View More) their instrument. Includes background science for the teacher, worksheets, adaptations and extensions. Next Generation Science Standards (NGSS) are also identified.(View Less)

Students will collect samples of particles in the air on simple slides they make themselves. They will classify, count and chart their findings, draw conclusions, make predictions, and compare their findings to other available data. Supplies needed...(View More) for the investigation include microscope slides, petroleum jelly, magnifying glass, microscope, Eosin, and Methyln Blue or iodine. The activity is part of the Ground Truth Studies Teacher Handbook, which provides more than 20 activities to build student understanding of global change and remote sensing, and includes background chapters for teachers, glossary, and appendices.(View Less)